"When you sign a debit card receipt at a large retailer, the store pays your bank an average of 75 cents for every $100 spent -- more than twice as much as when you punch in a four-digit code," the New York Times reported this week.
"It is a pointless distinction to most consumers, since the price is the same either way. But behind the scenes, billions of dollars are at stake. ….The difference is so large that Costco will not allow you to sign for your debit purchase in its checkout lines. Wal-Mart and Home Depot steer customers to use a PIN, the debit card norm outside the United States."
The full article goes into depth.
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